A buddy of mine told me about this place on Ingwangsan 인왕산 recently. If you start on the trail across the street from Hongjimun Gate 홍지문. I’ve been up Ingwangsan quite a few times but never up this path before. I didn’t see anyone on the trail until I got to the top of the mountain, and even then I only saw a couple of people. It’s the end of July and really hot so not many people are out hiking, but this path seem to not be use too much. It is a lot more over grown than other trail on Ingwangsan. If you follow that path that goes to the top of the mountain you will eventually come across this bunker. I don’t think many people go in their either since the door in was pretty overgrown as well. It’s considerably bigger than most of the bunkers and pill boxes I sent on Bukhansan and Dobongsan. I’m pretty curious why one this large was in this location. I’ll be posting up a video of this place on my Youtube channel Seoul City Outdoors as well.